package SQL::Translator::Producer::ClassDBI;
# -------------------------------------------------------------------
-# $Id: ClassDBI.pm,v 1.27 2003-07-09 06:09:56 allenday Exp $
+# $Id: ClassDBI.pm,v 1.28 2003-07-09 17:48:12 allenday Exp $
# -------------------------------------------------------------------
# Copyright (C) 2003 Allen Day <allenday@ucla.edu>,
# Ying Zhang <zyolive@yahoo.com>
use strict;
use vars qw[ $VERSION $DEBUG ];
-$VERSION = sprintf "%d.%02d", q$Revision: 1.27 $ =~ /(\d+)\.(\d+)/;
+$VERSION = sprintf "%d.%02d", q$Revision: 1.28 $ =~ /(\d+)\.(\d+)/;
$DEBUG = 1 unless defined $DEBUG;
use SQL::Translator::Schema::Constants;
if ( my $constraint = $table->primary_key ) {
my $field = ($constraint->fields)[0];
my $pk_name = $pk_xform->($table_pkg_name, $field);
-
+
$packages{ $table_pkg_name }{'pk_accessor'} =
"#\n# Primary key accessor\n#\n".
"sub $pk_name {\n shift->$field\n}\n\n"
;
}
}
-
+
+ my $is_data = 0;
+ foreach my $field ( $table->get_fields ) {
+ $is_data++ if !$field->is_foreign_key and !$field->is_primary_key;
+ }
+
+ my %linked;
+ if ( $is_data ) {
+ foreach my $link ( keys %{ $linkable{ $table_name } } ) {
+ my $linkmethodname;
+
+ if ( my $fk_xform = $t->format_fk_name ) {
+ # ADD CALLBACK FOR PLURALIZATION MANGLING HERE
+ $linkmethodname = $fk_xform->($linkable{$table_name}{$link}->name,
+ ($schema->get_table($link)->primary_key->fields)[0]).'s';
+ } else {
+ # ADD CALLBACK FOR PLURALIZATION MANGLING HERE
+ $linkmethodname = $linkable{$table_name}{$link}->name.'_'.
+ ($schema->get_table($link)->primary_key->fields)[0].'s';
+ }
+
+ my @rk_fields = ();
+ my @lk_fields = ();
+ foreach my $field ($linkable{$table_name}{$link}->get_fields) {
+ next unless $field->is_foreign_key;
+
+ next unless(
+ $field->foreign_key_reference->reference_table eq $table_name
+ ||
+ $field->foreign_key_reference->reference_table eq $link
+ );
+ push @lk_fields, ($field->foreign_key_reference->reference_fields)[0]
+ if $field->foreign_key_reference->reference_table eq $link;
+ push @rk_fields, $field->name
+ if $field->foreign_key_reference->reference_table eq $table_name;
+ }
+
+ #if one possible traversal via link table
+ if (scalar(@rk_fields) == 1 and scalar(@lk_fields) == 1) {
+ foreach my $rk_field (@rk_fields) {
+ push @{ $packages{ $table_pkg_name }{'has_many'}{ $link } },
+ "sub ".$linkmethodname." { my \$self = shift; ".
+ "return map \$_->".
+ ($schema->get_table($link)->primary_key->fields)[0].
+ ", \$self->".$linkable{$table_name}{$link}->name.
+ "_".$rk_field." }\n\n";
+ }
+ #else there is more than one way to traverse it. ack!
+ #let's treat these types of link tables as a many-to-one (easier)
+ #
+ #NOTE: we need to rethink the link method name, as the cardinality
+ #has shifted on us.
+ } elsif (scalar(@rk_fields) == 1) {
+ foreach my $rk_field (@rk_fields) {
+ # ADD CALLBACK FOR PLURALIZATION MANGLING HERE
+ push @{ $packages{ $table_pkg_name }{'has_many'}{ $link } },
+ "sub " . $linkable{$table_name}{$link}->name .
+ "s { my \$self = shift; return \$self->" .
+ $linkable{$table_name}{$link}->name . "_" .
+ $rk_field . "(\@_) }\n\n";
+ }
+ } elsif (scalar(@lk_fields) == 1) {
+ #these will be taken care of on the other end...
+ } else {
+ #many many many. need multiple iterations here, data structure revision
+ #to handle N FK sources. This code has not been tested and likely doesn't
+ #work here
+ foreach my $rk_field (@rk_fields) {
+ # ADD CALLBACK FOR PLURALIZATION MANGLING HERE
+ push @{ $packages{ $table_pkg_name }{'has_many'}{ $link } },
+ "sub " . $linkable{$table_name}{$link}->name . "_" . $rk_field .
+ "s { my \$self = shift; return \$self->" .
+ $linkable{$table_name}{$link}->name . "_" .
+ $rk_field . "(\@_) }\n\n";
+ }
+ }
+ }
+ }
+
+
#
# Use foreign keys to set up "has_a/has_many" relationships.
#
- my $is_data = 0;
foreach my $field ( $table->get_fields ) {
- $is_data++ if !$field->is_foreign_key and !$field->is_primary_key;
if ( $field->is_foreign_key ) {
my $table_name = $table->name;
my $field_name = $field->name;
# that the other table "has many" of this one, right?
#
# No... there is the possibility of 1-1 cardinality
- push @{ $packages{ $ref_pkg }{'has_many'} },
- "$ref_pkg->has_many(\n '${table_name}_${field_name}', ".
- "'$table_pkg_name' => '$field_name'\n);\n\n"
- ;
- }
- }
- my %linked;
- if ( $is_data ) {
- foreach my $link ( keys %{ $linkable{ $table_name } } ) {
- my $linkmethodname;
-
- # ADD CALLBACK FOR PLURALIZATION MANGLING HERE
- if ( my $fk_xform = $t->format_fk_name ){
- $linkmethodname = $fk_xform->($linkable{$table_name}{$link}->name,
- ($schema->get_table($link)->primary_key->fields)[0]).'s';
- } else {
- $linkmethodname = $linkable{$table_name}{$link}->name.'_'.
- ($schema->get_table($link)->primary_key->fields)[0].'s';
- }
-
-#$create .= $field->name. "\n";
-#$create .= $field->foreign_key_reference->reference_table. "\n";
-#$create .= $linkable{ $table_name }{ $link }->name. "\n";
-#$create .= $table_name. "\n";
-#$create .= $link. "\n";
-#$create .= "***\n\n";
-
- my @rk_fields = ();
- my @lk_fields = ();
- foreach my $field ($linkable{$table_name}{$link}->get_fields){
- next unless $field->is_foreign_key;
-
- next unless(
- $field->foreign_key_reference->reference_table eq $table_name
- ||
- $field->foreign_key_reference->reference_table eq $link
- );
- push @lk_fields, ($field->foreign_key_reference->reference_fields)[0]
- if $field->foreign_key_reference->reference_table eq $link;
- push @rk_fields, $field->name
- if $field->foreign_key_reference->reference_table eq $table_name;
- }
-
- #if one possible traversal via link table
- if(scalar(@rk_fields) == 1 and scalar(@lk_fields) == 1){
- foreach my $rk_field (@rk_fields){
- push @{ $packages{ $table_pkg_name }{'has_many'} },
- "sub ".$linkmethodname." { my \$self = shift; ".
- "return map \$_->".
- ($schema->get_table($link)->primary_key->fields)[0].
- ", \$self->".$linkable{$table_name}{$link}->name.
- "_".$rk_field." }\n\n";
- }
- #else there is more than one way to traverse it. ack!
- #let's treat these types of link tables as a many-to-one (easier)
- #
- #NOTE: we need to rethink the link method name, as the cardinality
- #has shifted on us.
- } elsif(scalar(@rk_fields) == 1){
- foreach my $rk_field (@rk_fields){
- push @{ $packages{ $table_pkg_name }{'has_many'} },
- "sub " . $linkable{$table_name}{$link}->name .
- "s { my \$self = shift; return \$self->" .
- $linkable{$table_name}{$link}->name . "_" .
- $rk_field . "(\@_) }\n\n";
- }
- } elsif(scalar(@lk_fields) == 1){
- #these will be taken care of on the other end...
- } else {
- #many many many. need multiple iterations here, data structure revision
- #to handle N FK sources
- foreach my $rk_field (@rk_fields){
- push @{ $packages{ $table_pkg_name }{'has_many'} },
- "sub " . $linkable{$table_name}{$link}->name . "_" . $rk_field .
- "s { my \$self = shift; return \$self->" .
- $linkable{$table_name}{$link}->name . "_" .
- $rk_field . "(\@_) }\n\n";
- }
- }
+ #if there weren't M-M relationships via the has_many
+ #being set up here, create nice pluralized method alias
+ #rather for user as alt. to ugly tablename_fieldname name
+ if(! $packages{ $ref_pkg }{ 'has_many' }{ $table_name } ){
+ # ADD CALLBACK FOR PLURALIZATION MANGLING HERE
+ push @{ $packages{ $ref_pkg }{'has_many'}{ $table_name } },
+ "sub $table_name\s {\n return shift->$table_name\_$field_name\n}\n\n";
+
+ #else ugly
+ } else {
+ }
+
+ push @{ $packages{ $ref_pkg }{'has_many'}{ $table_name } },
+ "$ref_pkg->has_many(\n '${table_name}_${field_name}', ".
+ "'$table_pkg_name' => '$field_name'\n);\n\n";
+
}
- }
- }
+ }
+ }
#
# Now build up text of package.
$create .= $_ for @has_a;
}
- if ( my @has_many = @{ $pkg->{'has_many'} || [] } ) {
+ foreach my $has_many_key (keys %{ $pkg->{'has_many'} }){
+ if ( my @has_many = @{ $pkg->{'has_many'}{ $has_many_key } || [] } ) {
$create .= $_ for @has_many;
- }
+ }
+ }
}
$create .= "1;\n";
projects / dbsrgits/SQL-Translator.git / commitdiff